Product Introduction

Sapphire Crystal for Watch

Material: Sapphire Crystal / Mineral Glass

Color: Clear, Blue, Red, etc.

Logo Print: According to customers' requirements (Metallization, Silk Screen Printing, Laser Engraving, etc.).

Coating: AR Coating (according to customers' requirements).

MOQ: 100 pcs.

Production Lead Time: 15-25 days.

Sample Lead Time: 7-15 days.

Product Features:

Name: Sapphire Watch Window
SKU: 2185454

· Sapphire optical windows are ideal for applications where high pressure, vacuum, or corrosive atmospheres are a consideration.

· Sapphire, a single crystal form of Al2O3, is resistant to attack by strong acids due to its high dielectric constant.

· It has high compressive strength and a high melting point.

Product Specification/Models:

· Material: Sapphire Crystal

· Design: Customized

· Color: Clear, Blue, Red, etc.

· Diameter: 0.40~102mm

· Tolerance: 0.005~0.10mm

· Thickness: 0.05~50mm

· Tolerance: +/-0.01mm

· Edge Finish: Ground and beveled

· Surface Quality: 40-20 scratch-dig

· Clear Aperture: >80% of central diameter

· Hardness (Knoop): 1370 kg mm-2

· Young's Modulus: 3.4 x 1011 N m-2

· Thermal Limit: 22 W m-1 K-1

· Thermal Expansion Coefficient: 8.4 x 10-6 K-1

Application:

· Watch glass, watch case, watch dials

· Mobile phone screen

· Camera lens

· Optical lens/optical parts for medical machine

· Other optical-related products

Quality Control:

1. Pre-production samples can be available before production if you need.

2. Production will be processed by both machine and skilled handmade workers.

3. The extra pieces will be ready as backup products.

4. The products will be double-checked before the final packing.